Sheet metal attachment system and method for installation of min

Details Sheet metal attachment system and method for installation of min Sheet metal attachment system and method for installation of min

1981-02-13

1983-08-09

Makay, Albert J.

Joints and connections

Interfitted members with external bridging piece

29432, 29526R, 403388, E21F 114

Patent

active

043972241

ABSTRACT:
A sheet metal attachment system and method for the installation of underground mine brattices of the type in which a gas impervious barrier of malleable sheet metal is retained on a peripheral framework of slotted beams. The fastening system involves pre-mounting a plurality of bolts projecting from one face of the framework as piercing pins so that the sheet metal may be initially applied by forcing it over the pins. The pierced sheet metal is then drawn against the framework by a multi-apertured washer plate and barrier mounting nut threaded onto the bolts.

REFERENCES:
patent: 2937690 (1960-05-01), Hedstrom
patent: 3300850 (1967-01-01), Steuernagel
patent: 3972272 (1976-08-01), Bagby

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